Iranian threats to block the flow of oil through the Strait of Hormuz, a global chokepoint, haven’t been manifested yet, an international affairs expert said.

Facing a November deadline on U.S. sanctions on its oil sector, Iranian President Hassan Rouhani said last week it was unfortunate that unilateral pressures would isolate a single major exporter. With U.S. President Donald Trump calling on Saudi Arabia to pump out more oil, Rouhani said he could impede the flow of oil through the key strait.

If Iran can’t export its own oil through the strait, no other country should be able to either, the Iranian president said…